Owing to rising oil prices and worries about climate change, there is a growing interest in nuclear power generation; forty countries have told the UN nuclear agency of plans to develop nuclear power generation capability; experts worry that this interest in nuclear technology is fueled at least in part by interest in nuclear weapons - especially in Middle Eastern countries terrified about the rise of a nuclear-armed Iran

With more and more companies turning to biofuels as an alternative to fossil fuels, a debate has erupted over the food-energy trade-off involved; a Welsh company bypasses this debate by planning to generate energy from straw

Renewable energy in Spain: Iberdola Renewables, one of Spain’s largest alternative energy companies, forms a joint venture with an Aragón bank to develop clean energy installations in the Aragon region of northeastern Spain

Paris-Orly airport sits on a hot water table where the water temperature reaches 74 degrees C (165 degrees F) at a depth of 5,500 feet; management thought it would be a good idea to build a geothermal station to exploit this source of energy

New York City already has it: A Free Flow Turbine in the East River which will generate 10 MW when the project is completed; now Ontario wants to place a three-blade, horizontal-axis turbine on the floor of the St. Lawrence River

When water flows over an underwater obstacle, whirlpools or vortices form alternately above and below it; the vortices create a tugging effect, so the result is an alternating force that yanks the object up and down; Wolverines researchers want to harness the power of vortices to generate energy

Wind power leaders from 2006 continue to lead in 2007 — Texas tops among states in both total and new wind power, FPL Energy operating the nation’s largest wind farms, and more; new and noticeable: Iowa leads the nation in wind generation on a percentage basis, obtaining 5.5 percent of its electricity from wind